JAVA开发的绘图小程序，能实现简单的绘图功能。能用鼠标拖动画出椭圆，正圆，直线，正方形，长方形，弧线，还能设置颜色，具有擦出、清除、保存等功能。-JAVA applet drawing development, to achieve the simple graphics. Can drag the mouse to draw an ellipse, perfect circle, line, square, rectangle, arc, but also set the color, ha